Question

x³-2x²-x+2factorise
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Answer 1

$\rightarrow\sf { {x}^{3} - 2 {x}^{2} - x + 2}$

$\rightarrow \sf{ {x}^{2}(x - 2) - 1(x - 2) }$

$\rightarrow \sf \purple {\boxed {\sf{( {x}^{2} - 1)(x - 2) }}}$